PHP 致命错误：未捕获错误：未找到 Class 'Elliptic\EC'

Question

我想在 PHP 中使用椭圆曲线密码术生成私钥/公钥。

我用过这个库： https://github.com/simplito/elliptic-php

我的代码：

<?php
use Elliptic\EC;

// Create and initialize EC context
// (better do it once and reuse it)
$ec = new EC('secp256k1');

// Generate keys
$key = $ec->genKeyPair();

$publicKey = $key->getPublic('hex');
$privateKey = $key->getPrivate('hex');

// Print the keys to the console

echo "The address1 is {$publicKey}. \r\n";
echo "The address1 is {$privateKey}. \r\n";

但它向我显示了这个错误：

PHP Fatal error:  Uncaught Error: Class 'Elliptic\EC' not found in /home/istabraq/bctest/test1/keygenerator.php:6

我已经从本教程安装了 composer Composer 1.6.3 ： https://linuxize.com/post/how-to-install-and-use-composer-on-ubuntu-18-04/

然后安装了sudo apt-get install php7.2-gmp并安装了composer require simplito/elliptic-php最后安装了composer require simplito/bn-php但最后一个命令行向我显示了这个 output：

Using version ^1.1 for simplito/bn-php
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Writing lock file
Generating autoload files

我错过了什么请帮忙？ 我搜索问题但没有教程。

Answer 1

尝试使用 class 包含文件，或者如果存在vendor/autoload.php包括它，例如：

<?php

include 'path/vendor/autoload.php'; //or 'path/file/EC.php'

use Elliptic\EC;

// Create and initialize EC context
// (better do it once and reuse it)
$ec = new EC('secp256k1');

// Generate keys
$key = $ec->genKeyPair();

$publicKey = $key->getPublic('hex');
$privateKey = $key->getPrivate('hex');

// Print the keys to the console

echo "The address1 is {$publicKey}. \r\n";
echo "The address1 is {$privateKey}. \r\n";